JPH0698285B2 - Low cost mixing and dispensing gun for reaction chemical products - Google Patents

Description

Description: BACKGROUND OF THE INVENTION The present invention relates to a mixing and dispensing gun used in the plastic foam industry.
pensing gun) and, more particularly, a gun adapted for easy, low-cost, large-scale product production, which gun has two reaction chemistries.
Thermosetting chemical products produced by mixing active chemical components
It can perform the functions required for accurate mixing and distribution of ducts.

In recent years, the use of polyurethanes and similar plastic foams has increased for many applications. Isocyanurates silicone
s), phenolics, and epoxy (epox)
Urethanes including ies and related products are well known as having a number of desirable properties. They have good thermal insulation properties, properties compatible with low cost blowing agents, reproducibility of chemical properties, and potential for good chemical and physical properties in finished products. .

Many urethane foams have a degredatio of deterioration due to the oxidation of common solvents, water and atmosphere.
Resistant to n). Urethane provides the best combination of thermal insulation and physical strength for a given cost. Foams are good adhesive materials and binders for any substrate. In this regard, the form can add structural strength to many products, which is an important factor in the product. Due to the systematic formulas available, flame retardancy can easily be achieved.

In addition, the reaction product of the two individual components (reaction pro
Urethane foams, which are ducts, can change their chemical composition for a number of purposes. Therefore,
Urethane foams can be systematically formulated to provide a final product that is completely solid, a semi-solid, or somewhat flexible and / or elastic. The type of foam in question is produced almost exclusively with closed cells or with the desired proportion of open cells.

The products of the type to which the present invention relates are mainly closed cell foam type products, which are isolated, isolated in building structures.
(sulation) purpose and (of the type to which the invention relates) are open cell products used for packaging applications (fields). The composition of the form is 40-50psi (pounds per square inch: / psi = 0.0703kg / c
passing through a gun at high pressure above m ² ) which serves to measure and mix the components passing through the nozzle,
The form is discharged from the nozzle. According to the invention,
The chemical composition is the working range in the preloaded cylinder (job si
bulk tanks that are either sent directly to te) or require an external pump or other pressurizing device.
Housed inside. Here, the amount of product needed to be dispensed is not so great as to require permanent and expensive equipment such as those used in the factory. However, the amount of product used is considerably greater than can be adjusted, for example by using individual small aerosol cans.
Individual containers of ingredients range from a few pounds to maybe 25-50 pounds,
Alternatively, carry more weight, or even more for each component. These tanks are portable enough to be moved over the work area by a single worker, and have a few hundred to a thousand board feet (boa).
rd feet: 1 boat foot can provide enough form to bring in 144 cubic inches of make-up. With the ability of chemical (reactant) supply tanks to move around, there is a great need for a dispensing gun that offers the advantages and features of low cost, flexible operation, and reliability in use.

One of these required features is that the products can be mixed in a nozzle which can be used at low cost for successive jobs or successive job stages, and after use. It can be cleaned up and replaced with another nozzle, and can be guaranteed.

Another desirable feature is that the chemical product or structure is
It is that both the product itself and, and overall, the desired dispensing rate (flow rate) can be accurately measured and proportioned.

Yet another requirement for the type of gun in question is that if the trigger is held fully open, or if the valve is in the mid range position to change the desired discharge rate. The valve is constructed and arranged to allow proper proportioning operation to be maintained even when open.

As a result, an ideal gun is one that can be reliably manufactured at low cost, preventing the pre-mixing of the component (s) into the mixing chamber (s) of the associated nozzle. It is a cancer that can keep the component (s) separated from each other until the component is eliminated.

Another feature of such guns is the presence of a valve and trigger assembly which permits this control and provides a means for controlling the flow of components towards the valve passages contained in the gun. The provision is also a feature of the gun.

Another desirable feature of such guns is that the discharge nozzle can be accurately positioned by feel.
And allowing the operator to see that the nozzle is fully seated in the fixed position before the operator uses the gun.

Yet another desirable feature is the ability to quickly remove used nozzles so that new nozzles can be used in place.

Another desirable feature is that the gun port is designed so that it does not have any dead space in the port that results in the deposition of chemicals, where the chemicals May be exposed to the atmosphere. In particular, the isocyanate component of the polyurethane may come into contact with atmospheric moisture (moisture) at the port and react and crystallize in the port, rendering the gun inoperable.

Therefore, the primary object of the present invention is to provide an improved combination mix and discharge mix for reaction chemical products.
ng and discharging gun), which comprises the gun itself or a gun combination with a removable nozzle, the nozzle being under the control of a trigger manually operated by an operator. Helps to mix and discharge the components supplied to the nozzle.

Another object of the invention is to be low cost, easy to manufacture, without subdivision component assembly or remanufacturing, and to work with a minimum number of components designed for mass production. It is to provide a gun with various components.

Yet another object of the present invention is to provide a gun with a valve assembly adapted to ensure that the components do not mix with each other prior to being discharged into the mixing chamber of the associated nozzle. It is a thing.

Yet another object of the present invention is to provide an embodiment of a valve adapted to facilitate mixing of the desired proportions of the components at some range of trigger or drain rate settings.

Yet another object of the present invention is to provide a gun with a large number of easily replaceable components, in which the calculated product mix is of great inconvenience or cost if desired. It can be changed or adjusted without cost.

Another object of the present invention is to provide a unique embodiment of seating valve components which allows full seating under high pressure without leakage.

Yet another object of the present invention is to provide a gun having a plurality of individual low cost replaceable components.

Another object of the present invention is to provide a gun which requires a minimal number of complex motion parts and which is adapted to provide relatively maneuverable operation in use.

Yet another object of the present invention is to provide a gun which is compatible with the presence of mixing and dispensing nozzles associated with the gun in use.

Yet another object is that the valve provides a positive cutoff of product flow, and the outlet passage or passage downstream of the flow control valve is extremely short and is closely connected to the associated nozzle nipple port. Is to provide.

The present invention achieves the above and other objects and advantages by providing a gun, the gun having a gun body, wherein the gun body is for a component inlet passage and a component outlet passage, and A housing for the material flow control valve is provided, the gun further including a handle, a nozzle receiving part assembly, and a trigger for rotating the spool valve between an open position, a closed position, and an intermediate position. Prepare,
The gun is provided with means for controlling the ratio of the components inside the flow path and the flow velocity (flow rate), and facilitates inserting, fixing and removing the nozzle inside the gun body.

Certain aspects of accomplishing the foregoing and other objects and advantages of the invention in practice will now be described by way of example and in the accompanying drawings, in which a detailed description of the preferred embodiments of the invention is set forth below. Will become more apparent when reference is made to the drawings, and like reference numerals in the accompanying drawings indicate corresponding parts throughout.

Preferred Embodiments of the Invention While the advantages of the invention may be achieved and practiced with other structures, the preferred embodiment of the invention is of the type shown and in the type shown. The gun assembly is made primarily of plastic material and has various structural and functional features to be described in detail herein.

Referring to FIG. 1, a gun assembly 10 is shown schematically.
And the gun assembly 10 includes a number of major components, the major components including a gun body, generally indicated at 12, the gun body 12 having a handle generally indicated at 14. , A component passage and flow control valve housing 16 for holding a hose, a nozzle receiving part assembly 18, a removable nozzle 20, a nozzle latch engagement and disassembly part combination element 22, a trigger assembly 24, a trigger safety device 26, and a first.
It is shown subdivided into component and second component inlet hoses 28, 30, each of which terminates in a forward fitting 31, 33.

Referring to FIG. 2, a nozzle assembly schematically illustrated.
20 comprises a cylindrical and reduced diameter main mixing body portion 32 and a larger diameter seating body portion 34 having a cylindrical outer alignment and matching surface 36. Is shown, and the surface 36 is an annular, latch-engaging surface 38 that faces forward and extends radially.
Is equipped with. The nozzle 20 further comprises means in the form of a spreader 40, which at its front end has a contoured outlet passage 42 for discharging the foam mixing product. A pair of nipples 44, 46 is provided at the axially inward (toward the gun body) end portion of the nozzle, each of which is adapted to seat within the outlet passage in the gun body. And each of the nips further comprises a plurality of flexible plastic seal ribs 48.

As already mentioned, the gun body 12 is provided with a handle 14, a part of which is provided with a slot 50, which in turn extends vertically, which slot 50 comprises a trigger safety device 26.
Is adapted to receive the rib 52 when the central rib 52 forming part of the rib is in the folded position. The handle 14 further comprises an opening 54, which is a pivot pin.
Adapted to receive 56, the pivot pin 56 is preferably integrally formed with the trigger safety rib 52. The slot 50 also has a trigger return spring 60.
Providing a convenient receiver for one leg 58, the trigger return spring is shown generally at 60 and is shown as a "clothespin" or hairpin type spring. It operates in response to torsional forces occurring in the central coil 59 of the.

The upper portion of the gun body 12 includes, as major elements, a component passageway and a product flow control valve housing 16, which housing 16 has the components detailed elsewhere herein. And further shown with spool receiving means in the form of a circular side wall 61 defining a cylindrical bore 62, which bore 62 extends transversely to the main axis of the housing 16. . The control housing 16 is further illustrated to regulate precisely or similarly formed product flow control jets 64, 66, each of which is preferably a matching rib 68, 70. And the jet is axially secured in place by associated jet fastening means in the form of screw-type compression fittings 72,74.

Mounted on the housing 16 is a receiving part of the nozzle latch engagement and disengagement combination element, which is schematically illustrated at 76 and is generally parallel or slightly tapered and spaced apart. Side wall 78, 80
And the side walls are shown to engage properly with the detachable parts when in the locked position, each of the side walls being provided with the same small opening 82,
A pivot ear 84 is received which forms part of the nozzle latch engagement and disassembly component 22. This unit 22 is then moved to the rocker-styl
e) shown to include a lever assembly having a finger tab 86 located on one side of the pivot ear 84 and extending generally horizontally and vertically. Has extending legs 88, 90, which are
88 and 90 are located opposite pivot point 84.
The end portion of the latch engagement leg 88 terminates in the hook 92, while the front surface 94 of the detachable component leg 90 engages the rear surface of the nozzle described in more detail herein. Works like. Latch engagement and removal parts receiving parts
76 has its side walls 78,80 which are the legs 88,90 of the latch engaging and disengaging component 22.
Spaced so that they are close enough to engage properly, preventing free movement of the element 22 and helping the nozzle 20 return to its proper position.

The nozzle receiving component assembly 18 is located at the front end of the housing 16 and includes a radially inwardly facing cylindrical nozzle guide surface 95, the surface 95 at the inner end of the front wall portion 96. Ends at the wall portion
96 will be referred to elsewhere. Aligning slots 98, 100, 102 are provided on the nozzle guide surface 95.

The other main elements shown in FIG.
, And the spool 104 is shown to have identical outer ears 106, 108, each of which has a hole as shown at 107, 109. Can be pierced to receive fasteners 111, 113 that are self-tapping threaded. The spool 104 is subdivided into a pair of valve elements 110, 112, each of which comprises a component flow path 114, 116 for the valve element, the flow paths being arranged parallel to one another. There is.

Preferably "viton" fluoro elastomer.
A seal in the form of an identical O-ring 118, made of elastomer), is placed in a groove of a common type and extends circumferentially around the spool 104, Subdivided into elements 110, 112 as described below. The spool is driven by rotation, which is provided by the arcuate movement of the trigger assembly 24. The trigger 24 comprises a handpiece 120, which is bifurcated and adapted to provide leg portions 122,124 at its upper end, each leg portion 122,124 being 12
Slots are provided at 6 and 128 to receive spool ears 106 and 108. The ears are then held in place by fasteners 111,113.

As a result, the trigger assembly 24 depends from the spool 104 and pivots about the central axis of the spool 104.

Referring to FIG. 3, the assembled gun 10 is shown in the unused off position with the trigger in the front and the valve 104 in the closed position. Gun body
12 is shown as being to be assembled with one fitting 31, which is on the end of a hose 28 which has a larger, smoother counterbore 130 in the housing 16. It is shown in place internally. A fastener 35 (FIG. 1) removably holds the fitting 31 in place in the counterbore 130. Mounting parts 31
Is equipped with an annular O-ring 132 in groove 134 to facilitate sealing the fitting 31 in a fluid tight relationship at the end of the hose inside the large, smooth counterbore 130 (FIG. 5).

As shown, a jet lock 74 in the form of a compression screw has a hexagonal or other contoured inner diameter 75 suitable for receiving a locking wrench, which is threaded in the housing 16. It is stuck in the smaller counterbore 77 that is present. The counterbore threads can be formed by simply forcing a fixture 74 into the counterline to cover the plastic against cold flow. Thereafter, by twisting the fixture 74, additional locking force may simply be generated. Fixture 74
The front edge portion 79 of the engagement with the outer end portion 67 of the jet 64,
The jet 64 is held firmly in place in the housing 16. The internal opening or orifice 65 in the jet can be dimensioned to indicate that it achieves the desired flow characteristics;
If the theoretical amount of the final product indicated that the component (s) should be provided at different volumetric flow rates, then the orifice (s) 65, etc. themselves would appear to have different inner diameters. Can be

As shown in FIG. 3, the spool 104 is positioned in such a manner that fluid cannot flow through the spool 104 when the trigger is in its inoperative position. The component flow passage 114 in the center of the spool is not aligned with any of the adjacent passages, and by engaging the inwardly facing portion of the cylindrical bore surface other than the orifice seat assembly 61, Blocking both forward and backward flow of product, the cylindrical bore surface 61 defines a spool means receiving opening 62. housing
16 is also a very short, reduced diameter product outlet passage
115, the passage 115 is tapered,
The opening is an enlarged diameter nickel port engagement surface 117.
The opening of the passage 115 is defined by the surface 117 so as to communicate with (FIG. 5).
And the surface 117 is located adjacent to and adjacent the spool passage 114.

The various bore, counterbore, and passage combinations receive hoses 28, 30, hose end fittings 31, 33, jet fasteners 72, 74 and jets 64, 66 themselves, and the bores, counterbore. , The passage is combined 1
Surfaces 115, 117 define a pair of inlet passages, while surfaces 115, 117 define a product outlet passage (only one shown in detail), the flow therethrough being controlled by the movement of spool 104. . Accordingly, an important feature of the present invention is that the housing 16 includes a pair of coaxially aligned passages, and one flow control valve for each passage.

FIG. 4 shows the elements referred to in connection with the description of FIG. 3 in the same relationship, except that the handpiece portion 120 of the trigger 24 is pulled to a fully open position ( The safety device 26 has been moved to the retracted position) and the handpiece 120 has fully compressed the spring 60. Then, the fluid freely flows through the passage formed as described above. It is shown in FIG. 4 that the claw portion 92 on the nozzle latch engagement and nozzle removal component 22 engages the latch engagement surface 38 of the nozzle 20.
The rear end surface 131 of the nozzle 20 is the nozzle receiving part assembly 18
Seated on or adjacent to the front wall 96 of the nozzle end wall 96, while the front surface 94 of the removable component leg 90 is located at the nozzle end wall 13 in the region between the nozzle inlets or the nipples 44, 46.
Engage with 1.

FIG. 5 shows the broken portion of one leg 122 of the trigger 24 in the intermediate position, in which the spool 104 is
One of the passages 114 has a jet opening or an orifice 65.
Are partially aligned with each other, but are further positioned in such a manner that they are partially blocked by portions of the orifice sheet assembly 64. This (intermediate) position allows a controlled volumetric flow rate or reaction component measurement, so that appropriate component velocities can be guaranteed even at low or intermediate flow rates.

The ability to change both the discharge rate (flow rate) and the relative volumetric flow rate of the components in the mix can be achieved by adjusting the jet orifice and spool passages. The orifice may vary in diameter and shape. If the orifice is not covered by the spool passage, it can begin to flow and be adjusted first. Varying the cross-sectional shape of these passages can be accomplished with mixture control similar to that required by the calculated amount of mixture.

Prior art guns having a ball check valve and a modified ball check valve occasionally experienced unsteady flow conditions other than a fully open condition. The structure of the present invention is an improvement over the prior art in this important respect.

Another important aspect of the design (of the invention) relevant to the prior art is the reliable blocking of the spool passages (FIGS. 3-5) at both ends. This prevents dirt from reaching the passage by the backward flow from the nozzle or atmosphere. If the operator actuates a gun with a blocked nozzle, a backward flow of mixed product (backflow) will occur. This causes the reacting and expanded material to become clogged behind the nozzle and expand backwards. The design of the present invention effectively prevents fouling of the spool passage due to such possible operational errors, and exposure of isocyanate to either air or reactants. To prevent.

FIG. 6 shows a state in which the nozzle 20 is removed or a state in which the nozzle 20 is mounted again, depending on the case. In this case, the front surface 95 of the vertically extending removal part leg 90
Are shown in front of the plane of the front wall 96 of the nozzle receiving part 18. Rotating the latch 22 around the ear 84 is
Both the release lever actuation and the non-fixed or non-latching engagement actuation occur. As long as the nozzle is fully seated and the latch is biased towards the position where the latch claw 92 engages the nozzle 20, the act of locking will be the receiving part assembly 18
Operating force between finger and nozzle 20, while actuating finger tab 86 both releases the latch engagement of the nozzle and removes the nozzle. As pointed out above, the slip fit of the removal part assembly into the removal part receiving groove of the body means that the latch is secured above the nozzle until the lever is released by the lever action in the removal part assembly. Guaranteed to be done.

In the preferred form, the entire gun just described includes spools, fasteners, jet fasteners, trigger springs 60,
And hose end fittings may be manufactured from plastics material. A major advantage of the present invention is that the passages within the nozzle nipples, component outlet passages, spool passages and product inlet passages are perfectly coaxially aligned. This greatly simplifies manufacturing and caring for the gun.

Examples of jets are such that they can be individually removed and replaced; the orifices or passages in the jets through which the resin component of the foam passes are different from those in which the isocyanate or other ingredients flow. Any or both of the orifices may have a shape other than circular in cross section, if desired. The jet fastener is preferably metal and is preferably a socket head set screw with a suitable central passageway formed therein.

Each jet is preferably provided with alignment ribs so that the curved front surface of the jet remains in good alignment and contacts the curved spool surface, which is the front surface of the jet. Engage in use. The hose fitting preferably comprises an O-ring and groove as shown, providing a fluid tight seal and easy removal; other embodiments may be used if desired.

Nozzles themselves are well known in the art, including those of the type shown in U.S. Patent Application No. 626,332, filed June 29, 1984, and of the type shown and described in U.S. Patent No. 3,784,110. It may be of the type known to the trader. These nozzles are equipped with a mixing chamber and a series of strips, etc. to allow good mixing before discharge.

The spool may be manufactured on an automatic screener or the like, with ears at the ends, fluid passages across the spool,
And a circular spool having an O-ring groove in the circumferential direction. The spool is positioned in alignment by a york type trigger, the trigger having the inner surface of the trigger positioned adjacent to and adjacent to the outer surface of the housing 16. Further prevent end play.

In use, the distal end of the hose is attached to the supply tank in a known manner. And it is only necessary to insert the nozzle assembly into the gun. When the nozzle is fully seated, it is held in place by engaging the latch. Thus, the steps necessary to expel the plastic foam product via the nozzle outlet are performed by simply actuating the trigger. The components are kept separate from each other while flowing and are mixed only inside the nozzle. If the foam product reacts and the operation is interrupted for a sufficient time to "set up" in the chamber, the nozzle can be removed and replaced, and the process restarted.
The gun can be used with a number of nozzles suitable for some application or variation. The gun is sufficiently economical that it continues to squirt after the contents of the tank have been emptied; however, if desired, it does not require skilled workers. It can be easily cleaned and reassembled at low cost.

In use, the gun offers the advantages of simplicity, low manufacturing cost, ease of use, and excellent control over product discharge rate (overall). As a result, the quality control performance of the gun approaches or exceeds that of a gun that is significantly more expensive than the gun.

The present invention provides a new and improved low cost mixing and dispensing gun which has a number of advantages and features, such as those pointed out herein, and beyond. It will be appreciated that the advantages and features are unique to the present invention.

[Brief description of drawings]

FIG. 1 is a perspective view of the mixing and dispensing gun assembly of the present invention with the mixing and dispensing nozzle in place in the gun, the trigger in the closed position, and the trigger safety device in the engaged condition. Figure 2 shows the gun in a typical use position; Figure 2 is an exploded perspective view of the gun of Figure 1 showing the nozzle,
The various components, including the trigger, the latch engagement and disengagement mechanism, the component flow control valve, and the component seat and seat compression screw are shown in their associated positions in the assembly; FIG. 3 is the gun of FIG. FIG. 4 is a longitudinal section view of the trigger in the off position with the trigger safety device in the engaged state; FIG. 4 is a longitudinal section view similar to FIG. Figure 5 shows a trigger in a fully actuated position for use in: Figure 5 is a cutaway sectional view of a component flow control valve spool showing the spool in an intermediate or measured position in use; and FIG. 6 is a cutaway view, partially in cross section and partially in elevation, showing the mixing and dispensing nozzle and nozzle latch engagement and disengagement element in the non-locked position. 10 …… Gun assembly, 12 …… Gun body, 14 …… Handle,
16 ... Housing, 18 ... Nozzle receiving part assembly, 20 ...
… Nozzle, 22 …… Latch engagement and disassembly parts combination element, 24 …… Trigger assembly, 26 …… Trigger safety device, 2
8,30 …… Hose, 31,33,72,74 …… Mounting part, 32 …… Main mixing body part, 34 …… Seating body part, 36 …… Alignment and matching surface, 38 …… Latch engagement Surface, 40 …… Spreader, 42 …… Exit passage, 44,46 …… Nipple, 48 …… Plastic seal rib, 50 …… Slot, 52 …… Center rib, 54,82 …… Opening, 56 …… Pivot pin, 58,88,90,12
2,124 …… Legs, 60 …… Trigger return spring, 59
...... Central coil, 61 ...... Circular side wall, 62 ...... Cylindrical bore, 64, 66 ...... Jet, 65 ...... Orifice, 68, 70 ......
Alignment ribs, 76 ... Latch engagement and disengagement combination element receiving parts, 78, 80 ... Side walls, 84 ... Pivot ears, 86 ...
… Finger tabs, 92… Hook claws, 95 …… Nozzle guide surface, 96 …… Front wall part, 98,100,102 …… Alignment slot,
104 …… Control valve spool, 106,108 …… Outer ear, 10
7,109 …… hole, 111,113 …… fastener, 110,112 …… valve element, 114,116 …… component flow path, 118,132 …… O ring, 12
0 …… Handpiece, 77,130 …… Counterbore, 134…
… Groove, 67 …… outer end, 79 …… forward end, 115 ……
Product outlet passageway, 117 ... Nipple port engagement surface, 131
...... Rear end surface.

Claims (16)

[Claims] 1. A gun assembly for directing individual streams of at least two separate reaction fluid components to an associated mixing and dispensing nozzle assembly, wherein the components react with one another. In order to produce a thermosetting resin material, the gun assembly is composed of a combination of the following components, and the gun body has a plurality of liquid inlet passages spaced from each other and A means for internally defining a plurality of spaced liquid outlet passages provided in a liquid receiving position, the gun body having a spool extending transversely to the axes of the inlet passage and the outlet passage. An end wall and a sidewall formed to define an opening in the gun body for fluid-tightly receiving a nozzle assembly within the gun body. The gun handle extends below the gun body in use, and the flow control valve spool is rotatably received within the spool receiving bore in a fluid-tight relationship. A passage extends across the axis of rotation of the valve spool and the passages are spaced so that as the spool rotates, the passage is associated with the associated inlet and outlet passages in the housing. Is configured and arranged to be fully aligned, partially aligned, and finally completely unaligned, the valve spool further including trigger attachment means at both ends, Each of the plurality of outlet passages terminates in the end wall of the nozzle receiving opening so that the component is retained in the nose within the gun body. Mixing is possible at the end of the nozzle in the receiving opening, the trigger unit has one end that can be moved by the user's fingers, and the other end has bifurcated parts facing each other. Each of the portions is secured to one of the trigger attachment means on both ends of the valve spool, the bifurcated portion also being closely attached to the gun body and within the gun body. A space is provided between the gun body and the gun body only by an operating gap so as to prevent lateral movement of the valve spool, and the biasing means is positioned such that the spool passage is not aligned with the inlet and outlet passages. A low cost mixing and dispensing gun for reaction chemical products, characterized in that the trigger is normally angled. 2. The gun assembly according to claim 1, wherein the plurality of passages are two passages. 3. The spool includes sealing means for fluid-tightly interengaging the cylindrical bore and the spool, the sealing means limiting axial product flow of the cylindrical spool. The gun assembly according to claim 1, wherein: 4. The gun assembly according to claim 1, wherein said gun body further comprises means for securing a component supply hose fitting inside said portion of said inlet passage. 5. An inlet hose having an end portion received in the inlet passage, the hose including a fitting at the end portion, each fitting having a seal ring groove and the groove. The gun assembly of claim 1 including an elastic seal disposed therebetween. 6. The handle further comprises a trigger safety device, the safety device having a portion pivotally mounted on the handle, wherein the trigger safety device is provided to prevent movement of the trigger. The gun assembly of claim 1 having another portion that engages a portion of said trigger in an operative position in use. 7. A combination of a gun assembly and a mixing and dispensing nozzle, the gun assembly including individual streams of at least two separate reaction fluid components within the mixing and dispensing nozzle assembly. Is suitable for directing, the components are suitable for producing a thermosetting resin material when reacting with each other, the nozzle is provided with at least one inlet passage and the at least one inlet passage. A mixing chamber in communication with a nozzle outlet passage, the gun assembly comprising a combination of the following components, the gun body having a plurality of spaced liquid inlet passages: A means for internally defining a plurality of spaced liquid outlet passages provided at a position for receiving the liquid from the liquid inlet passage is included. An end wall formed to define an opening in the gun body for fluid-tightly and removably receiving a nozzle assembly within the gun body. And a side wall therein, the gun handle extends below the gun body in use, and the flow control valve spool is rotatably received within the spool receiving bore in a fluid-tight relationship. A plurality of fluid passages extend transverse to the axis of rotation of the valve spool, and the plurality of passages are spaced so that the passages are associated with each other in the housing as the spool rotates. Configured and arranged to be fully aligned, partially aligned, and finally completely unaligned with the inlet and outlet passageways The valve spool further includes trigger attachment means at both ends, the outlet passage is terminated at the end wall of the nozzle receiving opening, whereby the components are mixed therein, The trigger unit has one end that can be moved by a user with a finger, and the other end has bifurcated portions facing each other, each of the bifurcated portions being on the opposite ends of the valve spool. Affixed to one of the trigger attachment means, said bifurcated portion is also closely attached to said gun body and only by an actuating gap so as to prevent lateral movement of said valve spool within said gun body. There is a space between the gun body and the biasing means, and the biasing means is usually located at a position such that the spool passage is not aligned with the inlet and outlet passages. Low cost mixing and dispensing gun of for are Riga diagonally, that reaction chemical product characterized by. 8. A gun assembly for directing individual streams of at least two separate reaction fluid components to an associated mixing and dispensing nozzle assembly, wherein the components, when reacting with each other, generate heat. Adapted to produce a curable resin material, the gun assembly, in combination, includes a gun body, the gun body comprising a component passageway and a flow control valve housing, the housing having a plurality of therein. A spaced-apart inlet passageway and a plurality of spaced-apart outlet passageways that are coaxially aligned with the inlet passageway, and that extend across the axes of the inlet and outlet passageways. A cylindrical side wall defining an extending spool receiving bore; means on the gun body defining a nozzle receiving part assembly; a nozzle and latch engagement disassembly part combination required; And a gun handle and a trigger unit, the unit having a handle portion mounted for movement with respect to the handle, disposed in fluid-tight relationship within the spool receiving bore. And including a spool secured in the bore and a passage extending transversely to the cylindrical axis of the spool, the passages being parallel and spaced from each other and as the spool rotates. , Said passages are fully aligned with associated inlet and outlet passages in said housing,
Constructed and arranged to be partially aligned and ultimately unaligned at all, the portion of the inlet passage being further defined by a jet,
Each of the jets has an orifice of a predetermined size therein, each of the jets has an engagement surface that at least partially engages the spool, and the outlet passage has an interior thereof. A means for receiving a nipple portion of a mixing and dispensing nozzle that is associated in a fluid-tight relationship with a nozzle latch engagement and disengagement part combination element received by the means for locating and latching within the means. Means for pivotally moving between an engaged position and a disengaged position, and normally biasing the trigger to a position such that the spool passage is not aligned with the inlet and outlet passages. Wherein the outlet passage has the nozzle nipple attached to the spool assembly at a position where the nozzle and the gun are assembled. Chikashi adjacently are constructed and arranged so as to permit being arranged, cancer assembly, characterized in that. 9. The gun assembly of claim 8 wherein said plurality of passages includes two passages. 10. The spool comprises sealing means adapted to provide fluid tight interengagement of the cylindrical bore with the spool, the sealing means being an axial product of the cylindrical spool. 9. The gun assembly of claim 8 which limits the flow of the gun. 11. The gun assembly according to claim 8 wherein said gun body further comprises means for securing a hose fitting within said portion of said inlet passage. 12. An inlet hose having an end portion received in said inlet passage, said hose comprising a fitting at its end portion, each of said fittings including a seal ring groove and said The gun assembly of claim 8 including an elastic seal disposed between the grooves. 13. The gun assembly of claim 8 wherein said inlet passage further comprises means for axially locking said jet in fluid tight engagement with a portion of said valve spool. 14. The means for locating the nozzle latch engagement and disassembly component comprises a spaced wall portion, the wall portion being a friction fit due to the inherent resilience of the wall portion itself. 9. The gun assembly of claim 8 which is dimensioned to securely engage a portion of said nozzle latch engagement and disengagement element. 15. The handle further comprises a trigger safety device having a portion pivotally mounted on the handle, and movement of the trigger in an actuated position in use of the trigger safety device. 9. A gun assembly as claimed in claim 8 further comprising a portion adapted to engage a portion of said trigger to prevent 16. A combination of a gun assembly and a mixing and dispensing nozzle assembly, wherein the gun is adapted to direct individual streams of at least two separate reaction fluid components toward the dispensing nozzle assembly. Wherein the components are adapted to produce a thermosetting resin material when reacted with each other, the gun assembly in combination includes a gun body, the gun body including a component passage and A flow control valve housing is provided having means therein for defining a plurality of spaced apart inlet passages and a plurality of spaced apart outlet passages coaxially aligned with said inlet passages. A cylindrical side wall defining a spool receiving bore extending transversely to the axis of the inlet and outlet passages; and the gun defining a nozzle receiving part assembly. An on-body means and a nozzle assembly releasably retained in the receiving part assembly, the nozzle being a nipple with an inlet port extending therethrough, And with seal ribs on its outer surface, including means for locating the nozzle and latch engagement disassembly component combination element, and a gun handle and trigger unit, the unit being mounted for movement with respect to said handle. A spool disposed within the spool receiving bore and secured in the bore in a fluid-tight relationship, and a passage extending transversely to the cylindrical axis of the spool. The passages are parallel and spaced from each other, and as the spool rotates, the passages are associated with each other in the housing. And it is fully aligned with the outlet passage,
Constructed and arranged to be partially aligned and ultimately unaligned at all, the portion of the inlet passage being further defined by a jet,
Each of the jets has an orifice of a predetermined size therein, each of the jets includes an engagement surface that at least partially engages the spool, and the outlet passage includes a fluid Nozzle latch engagement and disengagement part combination elements are received by said means for locating and in said means latching means of said nozzle assembly. Means for pivotally moving between an engaged position and a disengaged position and normally biasing the trigger to a position such that the spool passage is not aligned with the inlet and outlet passages. Wherein the outlet passage has the nozzle nipple near the spool assembly at a position where the nozzle and the gun are assembled. The combination of cancer assembly and mixing and dispensing nozzle assembly characterized by each other and are constructed and arranged so disposed, that the next Te.